7-8 Shift
General fault detected during the 7-to-8 upshift event.
Affected components
- Clutch pack
- Shift solenoid
Common causes
- High likelihood: Worn 8th-gear friction element
Possible symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.